Zini and Friends are a group of whimsical, friendly characters that grow with children. Each character is built using visuals that compliment a child’s developmental process. This stage is an introduction to exploring the world and sparking imaginations. With parent driven content, Zini and his friends grow with a child, guiding parents in teaching children about the world around them. This stage focuses on basic colors, shapes, and basic mathematics. This book focuses on subtraction.